Harbor Freight Tools High Speed Metal Air Saw Product manual
Contents
1. 6 Parts List and 14 Antik 7 Warranty inte eh aaa 16 ie 10 wn gt m j lt CENTRAL WARNING SYMBOLS AND DEFINITIONS This is the safety alert symbol It is used to alert you to potential personal injury hazards Obey all safety messages that follow this symbol to avoid possible injury or death A DANGER Indicates a hazardous situation which if not avoided will result in death or serious injury AWARNING Indicates a hazardous situation which if not avoided could result in death or serious injury Indicates a hazardous situation which if not avoided ACAUTION could result in minor or moderate injury NOTICE CAUTION Addresses practices not related to personal injury IMPORTANT SAFETY INSTRUCTIONS INSTRUCTIONS PERTAINING TO A RISK OF FIRE ELECTRIC SHOCK OR INJURY TO PERSONS WARNING When using tools basic precautions should always be followed including the following General To reduce the risks of electric shock fire and injury to persons read all the instructions before using the tool Work Area 1 Keep the work area clean and well lighted 3 Keep bystanders children and visitors away Cluttered benches and dark areas increase the while operating the tool Distractions are risks of electric shock fire and injury to persons able to result in2. 7 00 104 jeuondo 7 ooo emssad me sny OOO O 99910 YOM JO 00 pue HIP d 1 oo asn jo 11098 0 Z 9U 9 fe ee oe ENTE soul youesq 0 5911941514 WNWIUIW P E eN 3 UOHeIIA 104 5 0 20 aed 01055911300 104 sped 5 5100 4 Bn 08 B Aine ate 86 50 5100 E edojs dn s sry g 4 For technical questions please call 1 888 866 5797 Page 9 Item 91753 v m 5
3. Read the ENTIRE IMPORTANT SAFETY INFORMATION section at the beginning of this manual including all text under subheadings therein before set up or use of this product Note For additional information regarding the parts listed in the following pages refer to the Assembly Diagram near the end of this manual Note This air tool may be shipped with a protective plug covering the air inlet Remove this plug before set up Air Supply AWARNING TO PREVENT SERIOUS INJURY FROM EXPLOSION Use only clean dry regulated compressed air to power this tool Do not use oxygen carbon dioxide combustible gases or any other bottled gas as a power source for this tool 1 Incorporate a filter regulator with pressure gauge 3 Release the throttle oiler in line shutoff valve and quick coupler for best service as shown on Figure 8 4 Close the in line shutoff valve between and Figure B on page 9 An in line shutoff the compressor and the tool it ball valve is an important safety device because Tp on Turn on the air compressor according to the manufacturer s directions and allow it to build up pressure until it cycles off it controls the air supply even if the air hose is ruptured The shutoff valve should be a ball valve because it can be closed quickly 6 Adjust the air compressor s output regulator so that the air output is enough to properly power the tool but the output will not
4. 5 Manual amp Safety Instructions Save This Manual Keep this manual for the safety warnings and precautions assembly operating inspection maintenance and cleaning procedures Write the product s serial number in the back of the manual near the assembly diagram or month and year of purchase if product has no number Keep this manual and the receipt in a safe and dry place for future reference CENTRALPNEUMATIC high speed metal saw Blade Sold separately Visit our website at http www harborfreight com ITEM 91753 REV 14g Email our technical support at productsupport harborfreight com When unpacking make sure that the product is intact and undamaged If any parts are missing or broken please call 1 888 866 5797 as soon as possible Copyright 2004 by Harbor Freight Tools All rights reserved No portion of this manual or any artwork contained herein may be reproduced in Read this material before using this product any shape or form without the express written consent of Harbor Freight Tools Failure to do so can result in serious injury Diagrams within this manual may not be drawn proportionally Due to continuing SAVE THIS MANUAL improvements actual product may differ slightly from the product described herein Tools required for assembly and service may not be included Table of Contents 2 12 Specifications
5. Operating Instructions Read the ENTIRE IMPORTANT SAFETY INFORMATION section at the beginning of this manual including all text under subheadings therein before set up or use of this product Inspect tool before use looking for damaged loose and missing parts If any problems are found do not use tool until repaired Tool Set Up AWARNING TO PREVENT SERIOUS INJURY FROM ACCIDENTAL OPERATION Turn off the tool detach the air supply safely discharge any residual air pressure in the tool and release the throttle and or turn the switch to its off position before performing any inspection maintenance or cleaning procedures TO PREVENT SERIOUS INJURY Do not adjust or tamper with any control or component in a way not specifically explained within this manual Improper adjustment can result in tool failure or other serious hazards 1 The Blade Guard 34 may be removed when Note When Saw is in the upside down replacing blades Items 36887 or 36888 position the blade teeth will face upward sold separately but it must always be on during operation Using the Saw without the Blade Guard can result in severe injury Chuck Cover Set Screw Hex Wrench Figure Hex Wrench 4 Loosen the two Set Screws 30 inside until the blade can be removed Replace 2 Toremove the Blade Guard use the Wrench 31 with a new blade sold separately and to loosen the two Set Screws 24 on the tighten the Set Screws
6. Do not lay the tool down until it has come to complete stop Moving parts can grab the surface and pull the tool out of your control Do not smoke during use Nicotine reduces the blood supply to the hands and fingers increasing the risk of vibration related injury Wear suitable gloves to reduce the vibration effects on the user Use tools with the lowest vibration when there is a choice Include vibration free periods each day of work Grip tool as lightly as possible while still keeping safe control of it Let the tool do the work To reduce vibration maintain tool as explained in this manual If abnormal vibration occurs stop immediately A SAVE THESE INSTRUCTIONS Item 91753 For technical questions please call 1 888 866 5797 Page 5 Functional Description Specifications Maximum Air Pressure Maximum Speed Average Air Consumption Length of Stroke Steel Cutting Capacity Up to 16 Gauge Blades sold separately Item 36887 Coarse Blade 24 TPI parately 36888 Fine Blade 32 TPI Maximum speed at stated maximum air pressure Excess air pressure is hazardous and may cause the tool to exceed stated maximum speed Components and Controls Housing 28 Air Inlet 9 Blade Guard 34 Throttle 13 Blade sold separately Chuck Cover 26 Safety Lever CENTRALPNEUMATIC Page 6 For technical questions please call 1 888 866 5797 Item 91753 Initial Tool Set
7. WARNING marking concerning Risk of Blows per minute Hearing Loss Wear hearing protection l WARNING marking concerning CAET Get pen Minute low Risk of Respiratory Injury Wear Cubic Feet per Minute flow NIOSH approved dust mask respirator eee ei WARNING marking concerning A Risk of Explosion Page 4 For technical questions please call 1 888 866 5797 Item 91753 Specific Safety Instructions 1 The warnings and precautions discussed in this manual cannot cover all possible conditions and situations that may occur It must be understood by the operator that common sense and caution are factors which cannot be built into this product but must be supplied by the operator 2 WARNING Some dust created by power sanding sawing grinding drilling and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm Some examples of these chemicals are Lead from lead based paints e Crystalline silica from bricks and cement or other masonry products Arsenic and chromium from chemically treated lumber Your risk from these exposures varies depending on how often you do this type of work To reduce your exposure to these chemicals work in a well ventilated area and work with approved safety equipment such as those dust masks that are specially designed to filter out microscopic particles California Health amp Safety Code 25249
8. PROVIDED THE PARTS LIST AND ASSEMBLY DIAGRAM IN THIS MANUAL AS A REFERENCE TOOL ONLY NEITHER THE MANUFACTURER OR DISTRIBUTOR MAKES ANY REPRESENTATION OR WARRANTY OF ANY KIND TO THE BUYER THAT HE OR SHE IS QUALIFIED TO MAKE ANY REPAIRS TO THE PRODUCT OR THAT HE OR SHE IS QUALIFIED TO REPLACE ANY PARTS OF THE PRODUCT IN FACT THE MANUFACTURER AND OR DISTRIBUTOR EXPRESSLY STATES THAT ALL REPAIRS AND PARTS REPLACEMENTS SHOULD BE UNDERTAKEN BY CERTIFIED AND LICENSED TECHNICIANS AND NOT BY THE BUYER THE BUYER ASSUMES ALL RISK AND LIABILITY ARISING OUT OF HIS OR HER REPAIRS TO THE ORIGINAL PRODUCT OR REPLACEMENT PARTS THERETO OR ARISING OUT OF HIS OR HER INSTALLATION OF REPLACEMENT PARTS THERETO Parts List ____ 2 O ring a 5 7 2 4 Air ___ __ __5 Valve Spring _6 ValveStem l O ring 8 9 Throttle 15 Valve Case O 1 16 Bushing 1 17 Cylinder ___ _1 _ 18 Valve Sleeve _______ 1 19 Actuator Valve _______ 1 Washer ___________ Washer Cap Screw Record Product s Serial Number Here o Oring ____ 1 Valve Bushing J 1 ______ 1 10 CapScrew 4 11 Washer 4 50 Chuck Cover Screw Housing Piston Assy Set Screw Wrench 2mm Guide Plate Blade Chuck Blade Guard short Wrench 4mm Screw Upper Wear Shoe Blade Guide Bridge Front Bumper Rear Bumper Pin Spring
9. Packing Packing Packing Set Screw Blade Guard long Note If product has no serial number record month and year of purchase instead Note Some parts are listed and shown for illustration purposes only and are not available individually as replacement parts Page 14 For technical questions please call 1 888 866 5797 Item 91753 Assembly Diagram 9 MAINTENANCE Blade sold separately Item 91753 For technical questions please call 1 888 866 5797 Page 15 Limited 90 Day Warranty Harbor Freight Tools Co makes every effort to assure that its products meet high quality and durability standards and warrants to the original purchaser that this product is free from defects in materials and workmanship for the period of 90 days from the date of purchase This warranty does not apply to damage due directly or indirectly to misuse abuse negligence or accidents repairs or alterations outside our facilities criminal activity improper installation normal wear and tear or to lack of maintenance We shall in no event be liable for death injuries to persons or property or for incidental contingent special or consequential damages arising from the use of our product Some states do not allow the exclusion or limitation of incidental or consequential damages so the above limitation of exclusion may not apply to you THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING
10. must be long enough to reach the work area with enough extra length to allow free movement while working Item 91753 For technical questions please call 1 888 866 5797 Page 7 100 Dulun Sul J04 H 5 9 8952 10 1 pue 3 100 104 7 poo me sapv SSCA 99910 JO 00 HIP SPU A Id __________________ JOO S OOUUOD SO IV 5100 5100 dn s Ajddnsg 4 SETUP Item 91753 For technical questions please call 1 888 866 5797 Page 8 dNLas JOO ye Dulun 104 aajeA O 990910 5 N N YOIND
11. turn the switch to its off position after use Clean external surfaces of the tool with a clean dry cloth Then store the tool indoors out of children s reach WARNING To prevent tool and accessory failure resulting in injury do not exceed the tool s maximum air pressure rating 2 lt Lu ou CENTRALPNEUMATIC Item 91753 For technical questions please call 1 888 866 5797 Page 11 2 m gt 2 m User Maintenance Instructions Procedures not specifically explained in this manual must be performed only by a qualified technician AWARNING TO PREVENT SERIOUS INJURY FROM ACCIDENTAL OPERATION Turn off the tool detach the air supply safely discharge any residual air pressure in the tool and release the throttle before performing any inspection maintenance or cleaning procedures TO PREVENT SERIOUS INJURY FROM TOOL FAILURE Do not use damaged equipment If abnormal noise vibration or leaking air occurs have the problem corrected before further use TO PREVENT SEROUS INJURY FROM EXPLOSION Lubricate the tool only with specified lubricants Lubricate the air inlet using only pneumatic tool oil Lubricate the internal mechanism using only white lithium grease Other lubricants may damage the mechanism and may be highly flammable causing an explosion Cleaning Maintenance and Lubrication Note These procedures are in addition to the regular checks and maintenance
12. 5 et seq Vibration Precautions This tool vibrates during use Repeated or long term exposure to vibration may cause temporary or permanent physical injury particularly to the hands arms and shoulders To reduce the risk of vibration related injury 1 Anyone using vibrating tools regularly or for an extended period should first be examined by a doctor and then have regular medical check ups to ensure medical problems are not being caused or worsened from use Pregnant women or people who have impaired blood circulation to the hand past hand injuries nervous system disorders diabetes or Raynaud s Disease should not use this tool If you feel any symptoms related to vibration such as tingling numbness and white or blue fingers seek medical advice as soon as possible WARNING The brass components of this product contain lead a chemical known to the State of California to cause cancer and birth defects or other reproductive harm California Health amp Safety Code 25249 5 et seq Attach all accessories properly to the tool before connecting the air supply A loose accessory may detach or break during operation SAFETY Obey the manual for the air compressor used to power this tool Install an in line shutoff valve to allow immediate control over the air supply in an emergency even if a hose is ruptured Use this tool with both hands only Using tools with only one hand can result in loss of control
13. Replace the Chuck outside of the tool When replacing the Blade Seren Guard place it in the slots and tighten the CAUTION Do not overtighten the Screw Set Screws 24 See Figure 1 above or you may break the Chuck Cover Blade Guard Figure 1 Chuck Cover Figure 2 3 change blades first open the Chuck Cover 26 by removing the Screw 38 Swing the Chuck Cover 26 back on its hinge See Figure 2 above Page 10 For technical questions please call 1 888 866 5797 Item 91753 Work Piece and Work Area Set Up 1 Designate a work area that is clean and well lit The work area must not allow access by children or pets to prevent distraction and injury 2 Route the air hose along a safe route to reach the work area without creating a tripping hazard or exposing the air hose to possible damage The air hose must be long enough to reach the work area with enough extra length to allow free movement while working General Operating Instructions This Saw may be used for cutting through copper sheet metal aluminum and plastic When cutting sheet metal the angled face of the Blade Guard should rest on the plate to minimize its chatter allowing for smoother cutting action WARNING Do not exceed the maximum 16 gauge thickness when cutting sheet metal with this Saw Doing so can cause serious injury and damage to the tool WARNING Do not use a dull or cracked blade Check that the bl
14. THE WARRANTIES OF MERCHANTABILITY AND FITNESS To take advantage of this warranty the product or part must be returned to us with transportation charges prepaid Proof of purchase date and an explanation of the complaint must accompany the merchandise If our inspection verifies the defect we will either repair or replace the product at our election or may elect to refund the purchase price if we cannot readily and quickly provide you with a replacement We will return repaired products at our expense but if we determine there is no defect or that the defect resulted from causes not within the scope of our warranty then you must bear the cost of returning the product This warranty gives you specific legal rights and you may also have other rights which vary from state to state CENTRAL NEUMATIC 3491 Mission Oaks Blvd PO Box 6009 Camarillo CA 93011 1 888 866 5797
15. ade and Blade Guard are secured tightly before every use Operate the Saw with two hands Hold the Housing and throttle with one hand keeping your forefinger behind the Safety Catch Hold the front end of the tool with your other hand Keep all fingers behind the handle recess but do not cover the Chuck vent holes WARNING Failure to use two hands may cause the Saw to vibrate out of your control causing serious injury 3 Secure loose workpieces using a vise or clamps not included to prevent movement while working 4 There must not be hazardous objects such as utility lines or foreign objects nearby that will present a hazard while working 1 the blade is securely installed push the Safety Catch forward to release the Throttle Then press down on the Throttle to activate the Saw 2 Contact the workpiece allowing the Saw to do the cutting for you Do not exert excessive pressure on the workpiece Note If the tool requires more force to accomplish the task verify that the tool receives sufficient unobstructed airflow CFM and increase the pressure PSI output of the regulator up to the maximum air pressure rating of this tool If the tool still does not have sufficient force at maximum pressure and sufficient airflow then a larger tool may be required 3 To prevent accidents turn off the tool detach the air supply safely discharge any residual air pressure in the tool and release the throttle and or
16. exceed the tool s maximum air pressure at any time Adjust the pressure gradually while checking the 2 Attach an air hose to the compressor s air outlet air output gauge to set the right pressure range Connect the air hose to the air inlet of the tool Other components such as a coupler plug and quick coupler will make operation more efficient but are not required 8 Ifthe tool will not be used at this time turn off and detach the air supply safely discharge WARNING TO PREVENT SERIOUS INJURY i any residual air pressure and release the FROM ACCIDENTAL OPERATION throttle to prevent accidental operation Do not install a female quick coupler on the tool Note If an automatic oiler system is not used add a few drops of Pneumatic Tool Oil to the airline connection before operation Add a few more drops after each hour of continual use 7 Inspect the air connections for leaks Repair any leaks found Such a coupler contains an air valve that will Note Residual air pressure should not be present allow the air tool to retain pressure and operate after the tool is disconnected from the air supply accidentally after the air supply is disconnected However it is a good safety measure to attempt to discharge the tool in a safe fashion after disconnecting Note Air flow and therefore tool performance can to ensure that the tool is disconnected and not powered be hindered by undersized air supply components The air hose
17. explained as part of the regular operation of the air operated tool 1 Daily Air Supply Maintenance 3 Periodically Apply a light machine oil Every day maintain the air supply according to the pivot point on the Throttle to the component manufacturers instructions Maintain the lubricator s oil level 4 Before Each Use Check to make sure blades Drain the moisture filter regularly and Blade Guard are securely in place If Performing routine air supply maintenance necessary tighten the Set Screws 30 will allow the tool to operate more safely and will also reduce wear on the tool Quarterly Every 2months s Tool Disassembly Cleaning and Inspection 2 Make sure that the Housing that holds the blades Have the internal mechanism cleaned inspected and Air Inlet 9 are free of dirt and debris and lubricated by a qualified technician Page 12 For technical questions please call 1 888 866 5797 Item 91753 Troubleshooting Possible Causes Likely Solutions Decreased output Housing heats during use Severe air leakage Slight air leakage is normal especially on older tools 1 Not enough air pressure and or air flow Obstructed Throttle Incorrect lubrication or not enough lubrication Blocked air inlet screen if equipped Air leaking from loose housing Mechanism contaminated Incorrect lubrication or not enough lubrication Worn parts Cross threaded hou
18. ntended for use with the specific tool model increases the risk of injury to persons Page 3 Service 1 Tool service must be performed only 3 Use only the lubricants supplied with the by qualified repair personnel tool or specified by the manufacturer 2 When servicing a tool use only identical replacement parts Use only authorized parts Air Source wn gt m j lt Never connect to an air source that 2 Never use oxygen carbon dioxide combustible is capable of exceeding 200 psi gases or any bottled gas as an air source Over pressurizing the tool may cause for the tool Such gases are capable of bursting abnormal operation explosion and serious injury to persons breakage of the tool or serious injury to persons Use only clean dry regulated compressed air at the rated pressure or within the rated pressure range as marked on the tool Always verify prior to using the tool that the air source has been adjusted to the rated air pressure or within the rated air pressure range A SAVE THESE INSTRUCTIONS Symbols Specific Safety Instructions Symbol Definitions Symbol Property or statement Symbol Property or statement _ No load speed National pipe thread tapered Revolutions or reciprocation per minute National pipe thread straight WARNING marking Pounds per square inch of pressure Ges concerning Risk of Eye Injury Wear ANSI approved eye protection Foot pounds of torque
19. rface Contact with a wire will also make exposed metal parts of the tool and shock the operator Avoid body contact with grounded surfaces such as pipes radiators ranges and refrigerators There is an increased risk of electric shock if your body is grounded Explore the workpiece to avoid contact with hidden wiring Thoroughly investigate the workpiece for possible hidden wiring before performing work Contact with live wiring will shock the operator DANGER Keep hands and body away from cutting area and blade Keep your second hand on auxiliary handle or motor housing Heavy duty work gloves are needed for this tool Contact with the blade will result in a serious injury Do not reach underneath the work Store the tool when it is idle out of reach of children and other untrained persons A tool is dangerous in the hands of untrained users Maintain the tool with care Keep a cutting tool sharp and clean A properly maintained tool with sharp cutting edges reduces the risk of binding and is easier to control Check for misalignment or binding of moving parts breakage of parts and any other condition that affects the tool s operation If damaged have the tool serviced before using Many accidents are caused by poorly maintained tools There is a risk of bursting if the tool is damaged Use only accessories that are identified by the manufacturer for the specific tool model Use of an accessory not i
20. sed for the applicable conditions Wear heavy duty work gloves during use Tool Use and Care 1 Use clamps or another practical way to secure and support the workpiece to a stable platform Holding the work by hand or against the body is unstable and is able to lead to loss of control Do not exceed the maximum 16 gauge thickness when cutting sheet metal with Saw Do not force the tool Use the correct tool for the application The correct tool will do the job better and safer at the rate for which the tool is designed Do not use the tool if the switch does not turn the tool on or off Any tool that cannot be controlled with the switch is dangerous and must be repaired Disconnect the tool from the air source before making any adjustments changing accessories or storing the tool Such preventive safety measures reduce the risk of starting the tool unintentionally Turn off and detach the air supply safely discharge any residual air pressure and release the throttle and or turn the switch to its off position before leaving the work area Item 91753 10 11 12 13 For technical questions please call 1 888 866 5797 Always wear eye protection Wear ANSI approved safety goggles Always wear hearing protection when using the tool Prolonged exposure to high intensity noise is able to cause hearing loss SAFETY Risk of Electric Shock This tool is not provided with an insulated gripping su
21. sing components Loose housing Damaged valve or housing Dirty worn or damaged valve Check for loose connections and make sure that air supply is providing enough air flow CFM at required pressure PSI to the tool s air inlet Do not exceed maximum air pressure 2 Clean around Throttle to ensure free movement Lubricate using air tool oil and grease according to directions Clean air inlet screen of buildup Make sure housing is properly assembled and tight Have qualified technician clean and lubricate mechanism Install in line filter in air supply as stated in Initial Tool Set Up Assembly Air Supply Lubricate using air tool oil and grease according to directions Have qualified technician inspect internal mechanism and replace parts as needed Check for incorrect alignment and uneven gaps If cross threaded disassemble and replace damaged parts before use Tighten housing assembly If housing cannot tighten properly internal parts may be misaligned Replace damaged components Clean or replace valve assembly Follow all safety precautions whenever diagnosing or servicing the tool Disconnect air supply before service Item 91753 For technical questions please call 1 888 866 5797 MAINTENANCE Page 13 2 m gt 2 m Parts List and Diagram PLEASE READ THE FOLLOWING CAREFULLY THE MANUFACTURER AND OR DISTRIBUTOR HAS
22. the loss of control of the tool 2 Do not operate the tool in explosive atmospheres such as in the presence of flammable liquids gases or dust The tool is able to create sparks resulting in the ignition of the dust or fumes Page 2 For technical questions please call 1 888 866 5797 Item 91753 Personal Safety 1 Stay alert Watch what you are doing and use common sense when operating the tool Do not use the tool while tired or under the influence of drugs alcohol or medication A moment of inattention while operating the tool increases the risk of injury to persons Dress properly Do not wear loose clothing or jewelry Contain long hair Keep hair clothing and gloves away from moving parts Loose clothes jewelry or long hair increases the risk of injury to persons as a result of being caught in moving parts Avoid unintentional starting Be sure the switch is off before connecting to the air supply Do not carry the tool with your finger on the switch or connect the tool to the air supply with the switch on Remove adjusting keys and wrenches before turning the tool on Awrench ora key that is left attached to a rotating part of the tool increases the risk of personal injury Do not overreach Keep proper footing and balance at all times Proper footing and balance enables better control of the tool in unexpected situations Use safety equipment A dust mask non skid safety shoes and a hard hat must be u
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